Philadelphia (PHL) to Ontario (ONT) flight deal in economy from $354

United AirlinesUAUnited Airlines
Round Trip•Economy
United StatesPHL

Philadelphia International Airport

Philadelphia, United States
United StatesONT

Ontario International Airport

Ontario, United States
$463 USD
-24%$354 USD
Verified 13 days ago
Good Availability
45% of dates checked are available within 10% of the lowest price

Friday, August 21st, 2026

7 round-trip options

Returning
Thu, Aug 27, 2026•6 Day Trip
$410 USD
Google Flights
Returning
Fri, Aug 28, 2026•7 Day Trip
$360 USD
Google Flights
Returning
Sun, Aug 30, 2026•9 Day Trip
$360 USD
Google Flights
Returning
Mon, Aug 31, 2026•10 Day Trip
$354 USD
Google Flights
Returning
Wed, Sep 2, 2026•12 Day Trip
$354 USD
Google Flights
Returning
Thu, Sep 3, 2026•13 Day Trip
$432 USD
Google Flights
Returning
Fri, Sep 4, 2026•14 Day Trip
$438 USD
Google Flights